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Windows 7: Product Key when converting to x64

22 Feb 2015   #1

Windows 7 home Premium 32 bit
Product Key when converting to x64

I have a 3 copy Family Pack license for W7 Home Professional Upgrade. (1 Product Key - 3 installs). All 3 have been installed on 3 of my systems. I now want to convert from x32 to x64 which requires a clean install. The Product Key will show as being fully used on the Microsoft Servers. What method of installation do I use to avoid my Key being denied? The only choice I see is a "Normal" vs. a "Custom" install or possibly not checking the automatic activation box. I have also been told that I can indicate to MS that I have deactivated one of my licenses prior to installing the x64 version. Is that a way to do this?

Incidentally if I do have to contact MS for assistance with this issue, what is the best way" Phone or email? I have not contacted them in years so any shortcut you can suggest will be appreciated.

My System SpecsSystem Spec
22 Feb 2015   #2

Windows 7 Ultimate 64-bit, Windows 8.1 64-bit, Mac OS X 10.10, Linux Mint 17, Windows 10 Pro TP

I have a 3 copy Family Pack license for W7 Home Professional Upgrade.
I have a copy of Windows 7 Home Premium Upgrade [note the correct name] and it came with both 32-bit and 64-bit discs, the same key is used for installing either.

The phone method has worked good for me. Sometimes only have to put in the 'hash' numbers but if I get a live? person and can explain the situation/reason it has always worked.
My System SpecsSystem Spec

 Product Key when converting to x64

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